Hans Groenhoff (1906-1985) was born and educated in Germany, but emigrated to the United States in 1927. Residing in New York City, Groenhoff pursued his interest in aviation and photography. Following in the footsteps of his brother Günther, a famous aviator and pioneer glider pilot in Germany, Hans Groenhoff became an active glider pilot in the nearby Elmira, New York, area, nurturing a lifelong fascination with clouds and aerial photography. Groenhoff's photography career took off when he inherited two cameras following the death of his brother in a glider accident in 1932; he went on to work as a photographer, journalist, editor, and correspondent, with his photographs and articles published in mainstream magazines such as Life, Colliers, Esquire, National Geographic, and The Saturday Evening Post, as well as aviation publications such as Air Trails Pictorial, Sportsman Pilot, Aero Digest, and especially Flying and Popular Aviation, for whom he was a regular correspondent. Groenhoff also shot advertising and publicity photography for aircraft manufacturers and the U.S. Army Air Forces. Following the death of his first wife, Fridel Barth, in 1954, Groenhoff moved to the Miami, Florida, area to take advantage of better weather for photographing aircraft. In 1956, Groenhoff married Frances Semman, who assisted him in his work. In his retirement years, Groenhoff was employed by the Bahamas Government to promote the Islands as a tourist destination for private and sport aviation, founding their popular "Bahamas Flying Treasure Hunt" events which ran annually for several years.
Hans Groenhoff's aviation photography career is documented in the book Focus on Flight: The Aviation Photography of Hans Groenhoff by E. T. Woodridge (Smithsonian Institution, 1985).